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Re: mllib performance on cluster - Spark - [mail # user]
...Those are interesting numbers. You haven't mentioned the dataset size inyour thread. This is a classic example of scalability and performanceassuming your baseline numbers are correct and yo...
   Author: Bharath Mundlapudi, 2014-09-02, 22:10
[HIVE-2584] Alter table should accept database name - Hive - [issue]
...It would be nice if alter table accepts database name.For example:This would be more useful in certain usecases:alter table DB.Tbl set location <location>;rather than 2 statements.use ...
http://issues.apache.org/jira/browse/HIVE-2584    Author: Bharath Mundlapudi, 2014-08-13, 08:56
[MAPREDUCE-2413] TaskTracker should handle disk failures at both startup and runtime - MapReduce - [issue]
...At present, TaskTracker doesn't handle disk failures properly both at startup and runtime.(1) Currently TaskTracker doesn't come up if any of the mapred-local-dirs is on a bad disk. TaskTrac...
http://issues.apache.org/jira/browse/MAPREDUCE-2413    Author: Bharath Mundlapudi, 2013-08-29, 05:30
[HADOOP-7123] Hadoop Disk Fail Inplace - Hadoop - [issue]
...This is an umbrella Jira for tracking all the issues and work related for handling disk failures across the Hadoop stack. Today, Hadoop handles disk failures to some extent but not all the i...
http://issues.apache.org/jira/browse/HADOOP-7123    Author: Bharath Mundlapudi, 2013-03-22, 09:52
[expand - 1 more] - Re: Strange machine behavior - Hadoop - [mail # user]
...You may want to check why System time is high. Check your system call stats. This should give you some clue.  -Bharath     ________________________________  From: Robert ...
   Author: Bharath Mundlapudi, 2012-12-18, 08:42
Re: Reg: Map output copy failure - HDFS - [mail # user]
...What was the job or query you were running?  Couple of suggestions: 1. Reduce data set size with job chaining 2. Increase Reduce task heap 3. If you are using Hive/Pig, you may want to ...
   Author: Bharath Mundlapudi, 2012-12-11, 02:09
[HDFS-1592] Datanode startup doesn't honor volumes.tolerated - HDFS - [issue]
...Datanode startup doesn't honor volumes.tolerated for hadoop 20 version....
http://issues.apache.org/jira/browse/HDFS-1592    Author: Bharath Mundlapudi, 2012-11-26, 11:23
Re: backup of hdfs data - MapReduce - [mail # user]
...If data is less in your cluster (say less than few GBs) then answer is yes. But it is an expensive route. For large data sets, traditional means is not feasible and it is expensive.  If...
   Author: Bharath Mundlapudi, 2012-11-06, 05:10
Latest Pig vs Hive comparisons - Hive - [mail # user]
...Hello Community,  Is there any document/blog comparing different features offered by Pig 0.8 (0.9, 0.10) or greater and Hive 0.8 (0.9)?  -Bharath...
   Author: Bharath Mundlapudi, 2012-09-14, 17:34
[HDFS-2065] Fix NPE in DFSClient.getFileChecksum - HDFS - [issue]
...The following code can throw NPE if callGetBlockLocations returns null.If server returns null List<LocatedBlock> locatedblocks        = callGetBlockLocations(n...
http://issues.apache.org/jira/browse/HDFS-2065    Author: Bharath Mundlapudi, 2012-09-12, 03:11
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB